Meaning unexplained, though the first element is presumably Sindarin ara “noble, kingly”. This is the name of a character in The Lord of the Rings (1954) by J. R. R. Tolkien. In the book Aragorn is the heir of the Dúnedain kings of the north.
Means “spider” in Greek. In Greek myth Arachne was a mortal woman who defeated Athena in a weaving contest. After this Arachne hanged herself, but Athena brought her back to life in the form of a spider.
Means “altar of the sky” from Latin ara “altar” and coeli “sky”. This is an epithet of the Virgin Mary in her role as the patron saint of Lucena, Spain.
Meaning unknown, possibly of Sumerian origin. In Armenian legend this was the name of an Armenian king who was so handsome that the Assyrian queen Semiramis went to war to capture him. During the war Ara was slain.